Lath board and method of making the same



W. D. HICKS.

LATH BOARD AND METHOD OF MAKING THE SAME.

APPLICATION FILED JULY 29,1920.

1,406,188, Patented Feb. 14, 1922.

3 SHEETS-SHEET I.

INVENTOR WILLIAM B. HICKS.

ATTOR NS! W. D. HICKS.

LATH BOARD AND METHOD OF MAKING THE SAME.

APPLICATION FILED 1ULY'29,1920.

l ,188, Patented E61). 14, 1922.-

, l .6. a SHEETS-SHEE T 2.

mvzu'ron Wmymm D. HICKS W. D. HICKS.

LATHBOARD AND METHOD OF MAKING THE SAME.

APPLICATION FILED JULY 29,1920- Patented Feb. 14, 1922.

3 SHEETS-SHEET 3.

INVENTOR WILLIAM D. HlcKs.

ATTORNEY.

lid

rarer Application file-o1 this so,

To all whom it may concern:

Be it lrnown that 1, WILLIAM D. Hrons, a citizen of the United States, residing at Inglewood, in the county of Los Angeles and State of California have invented new and useful improvements in Lath Board and Methods oi Making the Same, of which the following is a specification.

This invention relates to a wall board which is especially adapted for use in lathing walls, ceilings, and the like to form a leaching and support for plaster, and further pertains to a method of manufacturing same.

lit is the object of this invention to provide a stron and substantial wall board or lath embodying a panel of plastic material having a series of non-continuous channels or openings therein adapted to receive and form a key for plaster, and which is so formed that the sides of the channels or openings will he faced with a sheet material, such as paper, and the end walls of the channels or openings left uncovered by the sheet material and formed oi the plastic composition so as to form surfaces at the ends of the channels or openings to which plaster will readily adhere.

Another object is to provide acornposition heard or" the above character in which the channels or openings will he formed with inclined side walls, so as to have tapered CEOE section and thereby form a key with the plaster; the channels or openings having end walls also adapted to interlock with the plaster.

Another object is to provide a construction whereby the facing sheets will be securely anchored in the composition, particularly the portions thereof lining the side wallsof the channels,

A further object is to provide a method by which a composition lath or wall board may be formed with a series of elongated openings and the side wallsot the openings lined with flaps struck from facing sheets covering the opposite sides of the board.

Other objects will appear hereinafter.

The invention is illustrated in the accompahying drawings, in which:

l lgure 1 is a plan View showing the outer face of the wall hoard or lath.

Fi ire 2 is a detail in section as seen on the line 2 -2 of Figure 1.

Figure 3 is a view in section as seen on the lure 3-3 of Figure it.

Specification of Letters retest.

I Patented re, rose 19%. serial No. $935M.

Figures is adetail in perspective showing the manner of forming the lower or inner lacing sheen Figure 5 is a detail in perspective showing the manner of forming the upper or outer facing sheet.

Figure 6 is a detail in horizontal section as seen on the line 6-6 of igure 2.,

Figures 7 and 8 are diagrams illustrat the method of punching the upper and lower facing sheets respectively.

Figure 9 is avdetail in ection as on the line 9-9 of Fi -"ore, '7. 2

Figure 10 is a side view of t e punching tooth as shown in b Figure 1;. is a detail in section as seen on the lure ll-li of Figure 8.

l igure 12 is a perspective view ot the punching tooth as shown in Figure ll. Figure 13 is a detail in section illustrat ing the initial steps employed in forming the hoard.

Figure it is a detail in section illustrating the final steps employed in forming the board.

Figure 15 is a detail in perspective showing the manner 01% mounting the lower mg sheet on a form and showing the construction of one of a series of cores for forming openings in the board.

Figure 16 is a view in side elevation of a ress on which the board may be formed.

igure 17 is a detail in perspective show, ing the follower plates employed on the press for crowding the flaps on the upper sheet into position.

More specifically, 20 indicates the wall board which comprises a panel 21 formed of any suitable plastic material, inner and outer facing sheets 22 and 23, and a backing sheet 24. The inner facing sheet 22 is formed with a series of parallel up-turned flaps 25 which are preferably struck therefrom by passing the strip between rollers 26 and 27, as shown in Figure 8 which rollers are respectively formed with teeth 28 and depressions 29, termed and arranged to punch elongated rectangular openings 30 in the sheet',"which openings are preferably arranged in rows extending lengthwise of the sheet with the openings in the adjacent rows. onset or staggered relative to each other,

The outer facing sheet 23 is formed with downturned flaps 31 extending along the Edit longitudinal edges of elongated slots 32 formed in the sheet by passing it between a pair of rollers 33 and 34 having teeth 35 and depressions 36 respectlvely, as shown in Figure 7; the openings 32 being arranged in the sheet 23 in the manner substantially corresponding to the arrangement of the openings 30 and the sheet 32. The openings 30 and 32 are of substantially corresponding lengths, but the openings 30 in the inner facing sheet are preferably of a width greater than the width of the openings 32 in the outer facing sheet, so that the flaps 25 will be spaced apart a distance greater than the spacing of the flaps 31.

In forming the wall board or lath the inner facing sheet 22 is placed on a panel or pallet 37 which is formed with upwardly extending cores 38 having inclined side Walls so as to form the core of tapered cross section, as shown in Figures 13, 14, and 15; the cores 38 being arranged on the pallet so as to extend through the openings 30 and project between the flaps 25, as shown in Figure 15. The plastic composition 21 is then spread on the facing sheet 22 to a depth approximately equal to the height of the upturned flap 25.

The upper facing sheet with the downturned flaps are then placed over the pallet with the cores 38 extending through the openings 32, as shown in Figure 13; the flaps 31 extending downwardly on the inclined side of the cores 38. The pallet is placed in a suitable press 39 such as shown in Figure 16 which press embodies a platform 40 to receive the pallet and includes a pressing plate 41 adapted to be brought to bear upon the upper facing sheet to press the later against the filler 21 and to compress the filler between the facing sheets. The flaps 31 on the outer facing sheet are designed to overlap the flaps on the inner facing sheet, and in pressing the outer facing sheet in place the flaps 31 are introduced between the flaps 25 and the cores 38, as shown in Figure 1 In order to insure the flaps 31 being positioned over the inner faces of the flaps 25 they are formed on the facing sheet at an angle relative thereto less than that of the flaps 25 on the backing sheet and the inclined side of the cores 38 are formed at an angle less than that of the flaps 25, so that a space or gap will be formed between the upper edges of the flaps 25 and the sides of the cores as indicated at 42 in Figure 13. In order to form the flaps 31 and 25 at different angles relative to the sheets 23 and 22 the teeth and sockets on the forming rollers are formed as shown in Figures 9 and 11 re-' spectively, and as a means for severing the material of the sheet to form'the flaps the teeth of the forming rollers are provided with longitudinally extending cutting blades 43 and 44 and with transverse end cutting blades 45-46 and 47-48 as shown in Figures 10 and 12.

As a further means for insuring position.- ing of the flaps 31 between the flaps 25 and the cores, the pressing plate 41 may be provided with a pair of slide plates 49 and 50 having downturned tapered flanges 51 and 52 projecting through openings 53 in the presser plate and are adapted to ride downwardly on the inclined side of the cores in advance of the presser plate in such manner as to crowd the flaps 31 into the gaps 42, as particularly shown in Figure 14; plates 49 and 50 being mounted in suitable guides on the presser plate and fitted with suitable spring 54 for either yieldably opposing spreading of'the plates and insuring their riding in close contact with the cores.

It will now be seen that on removing the board thus formed from the pallet, a series of elongated openings 55 will be formed therein, the side walls of which will be tapered and the openings formed of greater width on the inner side of the board than on the outer, and that the inclined sides of the openings will be lined by the overlapping flaps struck from the facing sheets. The ends'of the flaps are designed to be anchored in the plastic composition to hold them in place, which is effected by forming the cores 38 on their side faces of less length than the lengths of the slots, so that when the plastic material is subjected to pressure by the pressing plate a portion of the plastic will be crowded around the ends of the flaps to embed the latter, as particularly shown in Figure 6.

In order to provide a key in the end wall of the slots, the ends of the cores 38 are formed with tapered ribs 56 by which dovetail channels 57 will be molded in the end walls of the openings.

From the foregoing it will be seen that the Wall board will be formed with openings, the end walls of which will be formed of the plastic material constituting the filler portion of the board to which plaster will readily adhere.

As a means for stiffening the wall board and permitting its being rea'dlly handled without danger of breaking, a backing sheet 24 of a suitable tough material is mounted on the back of the panel which extends throughout the panel over the openings 55 and forms a bottom wall for the latter, so that the openings constitute channels and! do not extend entirely through the board. The channels are formed in the board of an suitable lengths being preferably about three inches long and one half inch wide at the top with about one and a quarter inches between the ends of adjacent slots, thus forming a wall lath of very substantial construction not liable to break in handling in forming the lath, but may resort to such changes and modifications as occasion may require coming within the scope of the appended claims.

I claim:

1. A lath board, comprising inner and outer facing sheets, and a composition filler interposed between said sheets, the filler being formed with rows of spaced slots, and the sheets formed with openings registering with said slots, and the sides of the slots being lined with overlapping flaps turned into the slots from the facing sheets.

2. A lath board, comprising inner and outer facing sheets, and a composition filler interposed between said sheets, the filler being formed with rows of spaced slots, and the sheets formed with openings registering with said slots, and the sides of the slots being lined with overlapping flaps turned into the slots from the facin sheets; the side walls of said slots incline to form the slots of tapered cross section.

3. A lath board, comprising inner and outer facing sheets, and a composition filler interposed between said sheets having openings therethrough; one of the facing sheets having ,fla s struck therefrom extending along the sides of the openings, and the other facing strip having flaps struck therefrom overlapping the first named flaps.

4. A lath board, comprising inner and outer facing sheets, and a composition filler interposed between said sheets having openings therethrough; one of the facing sheets having flaps struck therefrom extending along the sides of the openings, and the other facing strip having flaps struck therefrom overlapping the first named flaps; the ends ofthe overlapping fia s being lmbedded in the filler at the ends 0 the openings.

5. A lath board, comprising a composition panel having tapered openings therein, facing sheets on the opposite sides of said panel having flaps struck therefrom extending over and overlapping on the tapered sides of the openings with their ends anchored in the panel. 7

6. A lath board, comprising a composition panel having tapered openings therein, facing sheets on the opposite sides of said panel having flaps struck therefrom extending over and overlapping on the tapered sides of the openings with their ends anchored in the panel; the end walls of the openings being formed with tapered recesses.

7. The method of forming a lath board,

consistin in forming a facing sheet with elongate openings having upturned flaps on the long sides thereof, placing the sheet on a form having cores adapted to extend into the openings to 'hold the flaps in position, covering the sheet with a plastic composition through which the cores project to form openings, forming a second facing sheet with elongated openings havin downturned flaps, and pressing the secon facing sheet on the top of the composition with the flaps thereon overlapping the upturned flaps on the lower facing sheet.

"8. The method of forming a lath board,

consistin in forming a facing sheet with elongate openings having upturned flaps on the long sides thereof, placing the sheet on a form having tapered cores adapted to extend into the openings to hold the flaps in position, covering the sheet with a plastic composition through which the cores project to form openings, forming a second facing sheet with elongated openings havin downturned flaps, and pressing the second acing sheet on the top of the composition with the flaps thereon overlapping the upturned flaps on the lower facing sheet; the composition being pressed against the flaps on the tapered cores to form openings in the panel with inclined side Walls.

9. The method of forming a lath board consisting in interposing a plastic composition between inner and outer facing. sheets to form a panel, forming openings through the composition, facing opposite sides of said openings with portions struck from the facing sheet, and! mounting the panel thus formed on a backin sheet.

10. ,A lath boar comprising inner and outer facing sheets, a composition {filler interposed between said sheets, the filler being formed with rows of spaced slots, and the sheets formed with openings registering with said slots, and the sides of the slots being lined with overlapping flaps turned into the slots from the facing sheets, and a backing sheet extending over the inner facing sheet and covering one side of the slots.

. WILLIAM J). HICKS. 

